Do you like to drink hot water? Compared _________ people in most other countries, Chinese people especially like to drink warm water. Do you know why?

In the old days, people drank water from the _________. The bacteria (细菌) in it could make them _________. Ancient people around the world used different _________ to kill the bacteria in the water. For the Chinese, they thought drinking boiled water was the easiest way to protect _________ from the harmful bacteria.

What’s more, in traditional Chinese _________, “yin” and “yang” mean cold and hot energy. It was believed that the power of your body _________ “yang”. And drinking hot water could nourish (滋养) the “yang” energy. That’s _________ traditional Chinese doctors always suggest people should not drink cold water.

Besides this, before people in northern China had central heating (中央供暖), it was hard for them _________ the cold in winter. Drinking hot water helped them keep warm. Another reason is that since the early 20th century, the Chinese government has __________ people to drink more warm water. It has also helped the Chinese to form this special habit.

In China, Teachers’ Day was first celebrated on September 10,1985. Now people celebrate it on September 10 every year. On this special day, students usually give their teachers thank-you cards, flowers, fruits and other small gifts to show their respect（尊重）and appreciation（感激）.

In the United States, Teachers’ Day is known as “National Teacher Day”. It’s on Tuesday during the first full week of May. The day is celebrated by students to show their appreciation for their teachers with flowers, thank-you cards and other gifts.

In India, Teachers’ Day is celebrated on September 5 in honor of（纪念）the second president of India. September 5 is his birthday. Traditional songs are sung, poems are recited（背诵）and dramas are performed by both junior and senior students.

In Russia, Teachers’ Day was celebrated on the first Sunday of October between 1965 and 1994. Since 1994, the day has been celebrated on the 5th of October, the same day as World Teachers’ Day. Students usually show their respect and appreciation with games, competitions, dramas, dance or little presents. Besides the activities, some schools reward（奖励）their teachers for their efforts.

Teachers’ Day is celebrated in Vietnam（越南）on November 20th. It was first celebrated in 1958. Since 1982, the day has been named “Vietnamese Educators’ Day”. Students hold the Teachers’ Day parties at their schools to celebrate it.

247 graduate students of Fudan University have volunteered to teach the children in Xihaigu region（地区）of Ningxia for the past 22 years. The region used to be poor because of its terrible natural environment. “We expect to make a difference to the children’s life by sharing our knowledge in different fields,” one of the volunteers says.

The students have different abilities, so the volunteers have used different teaching methods to help them develop good study habits. “Local children had never learned English before, so we started with basic knowledge like English letters and pronunciation, ” says Li Lianshuo, a Fudan volunteer. The volunteers help the students remember English words, read articles and deal with their study problems.

“We visit the students’ homes in our free time. We communicate with their parents so that we help the parents understand the importance of children’s education, because the parents didn’t care much about it years ago, ” explains Yang Chenhaotong, who was the leader of the volunteer team in 2019. According to Yang, the parents give their children a lot of support in their studies now.

The volunteers have helped the local children with their studies. They have also set up football clubs and held many ball games to make the children’s life colorful. The Fudan University has also given away more than 10 million yuan to the region to build playgrounds（操场）and other buildings over the past 22 years.

“Thanks to my volunteer teacher, my life has changed a lot. I will study hard and become an excellent person like her,” Li Sumei, a local student, says excitedly.

Yuan Longping, “Father of Hybrid (杂交) Rice”, was born in Beijing. He is a famous     51    . He spent most of his life     52     rice in the fields. In 1974, he and his team     53     in developing a set of technologies for producing hybrid rice. The yields (产量) of the “Super Rice” are 30 percent     54     than those of common rice. By his achievement, China can feed her 1.4 billion (十亿) population. Since 1979, his technologies for hybrid rice have been introduced into many countries around the world. Yuan Longping has helped solve the food problem not only for China but also for the world. We Chinese are     55     proud of him. We’ll remember him forever.